The sympathy was literally a founding myth, like the pilgrims in north America escaping persecution and the concept of Thanksgiving.

Countless documents about how Zionist orgs coordinated with the Nazi regime, even against non-Zionist Jewish orgs, to get support for the colonization in Palestine.

Fanatical Zionist militias reached out to Hitler directly asking for support to colonize Palestine while the Holocaust was happening.

Holocaust survivors are looked down upon in Israeli society as being weak.

This isn't humanity going through genocide and doing it again. Zionism was sick from the start.